Question 1

1. 45m → 0.75

   s = 3/0.75

   = 4kmh^-1

2. C

3. 3500N, 510kg

4. chemical potential energy → kinetic energy → gravitational potential energy

5. P = Fd/t

   P = (5100x12)/5.5

   P = 11,127.27

   P = 11.127kW

6. P = VI

   I = P/V

   I = 1,492/230

   I = 6.49A

Question 2

1. D

2. Red light is at the top of the image because when white light travels through the prism, it refracts as the light bends. Red light has the lowest wavelength and therefore it will be refracted the least. So, the red light is the fastest in the prism.

3. infrared waves have a lower frequency

4. v = f lambda

   3x10^8 = f x 750x10^-9

   f = (3x10^8)/(750x10^-9)

   f = 4 x 10^14

Question 3

1. 6, 14
2. same number of protons, different number of neutrons
3. gamma rays are produced from the nucleus of an atom, x rays are produced from the inner orbit of electrons
4. alpha, beta-1
5. a neutron is being absorbed by the nucleus

Question 4

1. How does the mass on the plunger affect the volume of air inside the syringe?